1312032031 has 4 divisors (see below), whose sum is σ = 1317137472. Its totient is φ = 1306926592.

The previous prime is 1312031999. The next prime is 1312032041. The reversal of 1312032031 is 1302302131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1302302131 = 13 ⋅100177087.

It is a cyclic number.

It is not a de Polignac number, because 1312032031 - 2⁵ = 1312031999 is a prime.

It is a super-2 number, since 2×1312032031² = 3442856100739969922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312031996 and 1312032014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312032041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2552335 + ... + 2552848.

It is an arithmetic number, because the mean of its divisors is an integer number (329284368).

Almost surely, 2^1312032031 is an apocalyptic number.

1312032031 is a deficient number, since it is larger than the sum of its proper divisors (5105441).

1312032031 is an equidigital number, since it uses as much as digits as its factorization.

1312032031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105440.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1312032031 is about 36221.9827038775. The cubic root of 1312032031 is about 1094.7496438406.

Adding to 1312032031 its reverse (1302302131), we get a palindrome (2614334162).

The spelling of 1312032031 in words is "one billion, three hundred twelve million, thirty-two thousand, thirty-one".